Shaftless gyratory cone crusher



Dec. 22, 1942.

0. c. GRUENDER SHAFTLESS GYRATORY CONE CRUSHER:

Filed Aug. 28, 1940 I 2 Sheets-Sheet l" .fnvenlar 05607" C Gruender Dec.22, 1942. o. c. GRUEND ER SHAFTLESS GYRATORY CONE CRUSHER Filed Aug. 28,1940 2 Sheets- Sheet 2 fnyewz r 05007" C ruerzfir 4 Mm Jiaarzzeys.

Patented Dec. 22, 1942 SHAFTLESS GYRATORY CONE CRUSHER Oscar C.Gruender, Milwaukee, Wis., assiguor to Nordberg Manufacturing Company,Milwaukee,

Wis., a corporation of Wisconsin Application August 28, 1940, Serial No.354,591

Claims.

My invention relates to an improvement in gyratory crushers and has forone purpose the provision of an improved actuating and supporting meansfor the head of a gyratory crusher.

Another purpose is the provision of a gyratory crusher having a headfree from the unitary depending shaft employed prevailingly in previousgyratory crushers and shown, for example, in Patent No. 1,537,565,issued to Edgar B.

Symons on May 12, 1925, and reissued on February 16, 1934, as No.19,154.

Another purpose is the provision of improved supporting means for agyratory crusher head suitable connecting member 22, communicating withthe 011 line 23, extending from any suitable pump or source oflubricant. A ledge 24 con- ,nects the sleeves II and I3, and is providedwith supporting means or rings 25, asshown in Fig. 1. The upper edge ofthe sleeve ll terminates in an enlargement 26, preferably having an up-;wardly and inwardly inclined surface 21, and an inner generallycylindrical surface 28, which may be provided with channels 29 toreceive sealing rings 30.

Rotatable about the member I3 is an eccentrically apertured sleeve 3|,having an inner cylinin which the head is supported and centered by anupstanding portion of the main frame.

Another purpose is the provision of improved oil sealing means forprotecting the bearings of the actuating portion of the crusher.

Other purposes will appear from time to time in the course of thespecification and claims.

I illustrate my invention more or less diagrammatically in theaccompanying drawings wherein:

Fig. 1 is a vertical axial section; and

Fig. 2 is asection on the line 2-2 of Fig. 1.

Like parts are indicated by like symbols throughout the specificationand drawings;

Referring to the drawings, l indicates any suitable base or foundation,upon which is positioned a circumferentially extending main frame 5 2,which may for example have a bottom flange 3, resting upon the base I,and secured to it by any suitable means. The circumferential flange 2 isbroken away to provide for an outwardly extending generally cylindricalsleeve 4, the pur- I pose of which will later appear. The flange 2terminates at its upper edge in an outwardly extending flange 5, havinga top face 6, generally horizontal, and an outer generally vertical face1, an outer inclined face 8, and an inner inclined face 9.

Connected to the main frame by any suitable radial ribs or frame member[0 is a central sleeve ll, one part of which is flattened or plate l5and may receive at its bottom end any 1 The member I3 is hollow, as atI1, and

drical bearing 32 and an outer cylindrical bearing 33. The axes of thesetwo bearings are inclined in relation to each other. At the bottom ofthe sleeve 3| is a gear 34, which may be keyed or otherwise securedthereto, and is in mesh with the pinion 35 on the drive shaft 36 in thebearing sleeve 31, having a hearing or bearings 38, located in thesleeve 4 in the main frame. The

sleeve 31 has an enlargement 40, which closes an aperture in the sleeveII, as shown in Fig. 1. The space between the enlargement 40 and theflattened portion l2 serves as a housing or space for the pinion 35.

Mounted for sliding movement on the top bearing plate 16 is a crusherhead supporting plate 4|, having a bottom plane surface 42, conformingto the upper surface of the plate l6, and a top spherical concavebearing surface 43, the sphere of which is described about the center A,located above the crushing cavity. The center A is located by theintersection of the axes A-B and A-C. A--B is the central axis of theouter periphery of the fixed upstanding cylindrical member l3 and A-C isthe central'axis of the outer periphery of the eccentrically aperturedsleeve 3|. The plate 4| is provided with an oil passing aperture 44,generally aligned with the oil passages 20 and 2|. It will be understoodthat the relative movement of the members 4| and I6 is slight, but aperceptible amount of lateral movement is advantageous.

generally indicates a crushing head having 2 posed between the outersurface ofthe lower portion of the sleeve 53 and the flange 25 is asealing ring 55, which may be secured to the gear 34 as by any suitablebolt or bolts 55, and rotates in unison with the gear 34. The sealingring 55 has an inner enlargement 51, with an upward conic extension 58,extending beneath the shield 54. The body portion 51 is provided withchannels 59 to receive sealing rings 60, which seal between the ringportion 5! and the exterior of the lower portion of the sleeve 53 of thehead. The ring 55 also has an outer cylindrical portion 8| opposed tothe sealing rings 30 on the frame flange 28, and an outer apron 52,which extends downwardly about the conic surface 21 of the flange 25.Thus the ring is eifective as a sealing connection between the frameportion-ll,

and the head sleeve 53, and the overhanging aprons 54 and 62 are anadditional protection against the penetration of dust into the bearings.The lower edge of the head may also be provided with a downwardlyextending protecting apron 65, which is a further protection againstdust.

The head is shown as provided with an upwardly extending sleeve 6'6,screw threaded at the top, as at 51, to receive any suitable locking nut58, which exerts a downward thrust on a conic compression member 59, thelower edge of which engages the upper edge of any suitable coniccrushing mantle 10, which rests on the outer conic surface of the head52.

II indicates any suitable packing of zinc or the like. 73 is anysuitable feed restricting or feed distributing plate, mounted above thenut 58. Since the details ofthe feed plate and its connection to thehead do not of themselves form part of the present invention, they arenot described or shown.

Mounted upon the flange 5 is a ring 80, having a downwardcircumferential channel 9|, defined by surfaces corresponding to thesurfaces of the flange 5. Any particular upwardly converging conicsurfaces 82 and 821.! are provided, which engage the correspondingsurfaces 8 and 9 of the flange 5. The ring 80 is normally held clampeddownwardly against the flange 5 by any suitable means, including forexample tension'members or bolts 33, having at their lower ends anabutment ring 84. A plurality of coil springs 85 serve to thrust thering 84- dow'nwardly, the coil springs being compressed between the ring84 and the lower face of the flange 5. They are purposely so set thatwhen uncrushable material, tramp iron or the like, passes through thecrushing cavity, the ring may lift slightly. The ring 80 carries a screwthreaded annular portion 35, which receives in screw threaded relationthe bowl structure, including an outer cylindrical portion 37, to whichis secured, or with which is integrally formed, an inner'conic bowl 833,which receives the crushing bowl liner 89, which may be secured inposition for example by hook-shaped lugs 99, which extend throughapertures 91 in the bowl 83, and are held by U-bolts 92, located in thespace between the bowl portions 81 and 38.

The top of the bowl portion may be closed by any suitable upwardly andoutwardly conic shield 93, which may be provided with wear plates 94. isan additional exterior shield, and 96 a; generally cylindrical feeddirecting member. It will beunderstood that the bowl structure ingeneral may be adjusted as to height in relation to the ring byimparting relative rotation to the members 81 and 95. However, since thedetails of this adjustment do not of themselves form part of the presentinvention, they will not be herein described.

It will be understood that oil may be delivered in any suitable manneralong the line 23 and upwardly along the line 20 to the bearings 42 and43, whence it may pass outwardly and lubrica'te the bearings 32 and 33.Oil may also pass by thepassage 91 to the bearing 39. i

It will be realized that, whereas I have describedand illustrated apractical and operative device, nevertheless many changes may be made inthe size, shape, number and disposition of parts without departing fromthe spirit or my invention. I therefore wish my description and drawingsto be taken as in a broad sense illustrative or diagrammatic, ratherthan as limiting me to my precise showingl The use and operation of myinvention are as follows:

The mantle Hi and the liner 89 define a crushing cavity, into whichmaterial is delivered from above, and where it is crushed by thegyration of about the center A, in which the zone or point of approachof the head to the bowl passes circumferentially about the crushingcavity in regular sequence.

The head is gyrated in response to the rotation of the eccentricallyapertured sleeve 3|. Since the movement of the head is circular and nota movement of translation, the axes of the bearings 32 and 33 areinclined in relation to each other.

A rotation of the shaft 38 by any suitable motive means causes a unitaryrotation of the gear 34 and the eccentrically apertured sleeve 3!. Thethick side of the sleeve 3! is thereby moved circumferentially about thecentral fixed frame members l3, and the result is the desired gyrationof the head and its consequent crushing action.

The sealing member 55 moves in unison with the gear 34, and the thinside of the sealing ring 55 is thereby always aligned with the thickside of the sleeve 3i.

The downwardly extending sleeve 53 of the head receives the thrust ofthe exterior bearing 33 of the eccentrically apertured sleeve 3|. Thesealing ring is effective to seal both against the exterior of thesleeve 53 and the interior of the flange 26, thus providing an effectiveseal against the penetration of dust or grit into the bearings. Theoverhanging aprons 54 and 92 are further advantageous in preventing theaccess of dust to the bearings.

I claim:

1. In a gyratory crusher, a main frame, a generally central memberupstanding from said main frame and having a generally cylindricalexterior bearing surface, an eccentrically apertured sleeve mounted onand rotatable about said upstanding member, and means for rotating it,said sleeve havinglnner and outer generally cylindrical bearingsurfaces, the axes of said bearing surfaces being at an angle to eachother, said upstanding member having a generally flat upper bearingsurface, a bearing plate mounted upon said hearing surface and having abottom fiat bearing surface opposed to said bearing surface, and a topspherical upwardly concave bearing surface, a crushing head having adownwardly convex spherical bearing surface seated on and conforming tothe upwardly concave bearing surface of said plate, and a downwardlyextending cylinasoaoie drical member having an inner bearing surfaceconforming to the exterior bearing surface 'of said eccentrlcallyapertured sleeve, and a crushing bowl surrounding said crushing head anddefining with it a crushing cavity.

2. In supporting and actuating means for the head of a gyratory crusher,an upstanding supporting element having a generally cylindrical exteriorside bearing surface and a generally plane generally horizontal topbearing surface,

a bearing plate mounted on said top bearing sur- 8. In a gyratorycrusher,-a crusher frame, an upstanding element on said frame having agenerally cylindrical exterior side bearing surface, an eccentricallyapertured sleeve surrounding and conforming to said exterior bearingsurface, and means for rotating it, said sleeve having exterior andinterior generally cylindrical bearing surfaces, the axes of which areinclined to each other, the axis of the inner surface and the exteriorside bearing surface of the upstanding element being generally vertical,and a head extending about an upperportion of. said upstanding elementand having a bearing surface surrounding and conforming to the exteriorbearing surface of the eccentric sleeve, and means for supporting saidhead, including a direct supporting connection between said head and afixed I portion of said frame.

face of said plate, and an inwardly cylindrical bearing surfacesurrounding and conforming to the exterior bearing surface of saideccentrically apertured sleeve.

' 8. In supporting andactuating means for the head of a gyratorycrusher, an upstanding supporting element having a generally cylindricalexterior sidev bearing surface, a bearing member mounted at the top ofsaid element and having an upwardly concave spherical top bearing face,an

eccentrically apertured sleeve surrounding said exterior bearingsurface, and means for rotating it, said sleeve having exterior andinterior generally cylindrical bearing surfaces, the axes of which areinclined to each other, and a head having a downwardly convex sphericalbearing surface conforming to said upwardly concave spherical bearingsurface, and an inwardly cylindrical bearing surface surrounding andconforming to the exterior bearing surface of said eccentricallyapertured sleeve.

4. In supporting and actuating means for the having an inwardlycylindrical bearing surface surrounding and conforming to the exteriorhearing surface of the eccentrically apertured sleeve.

5. In a gyratory crusher, a crusher frame, an upstanding element on saidframe having a generally cylindrical generally vertical exterior sidebearing surface, an eccentrically apertured sleeve surrounding andconforming to said exterior bearing surface, and means for rotating it,said sleeve having exterior and interior generally cylindrical bearingsurfaces, the axes of which are inclined to each other, and a headhaving a bearing surface surrounding and conforming to the exteriorbearing surface of the eccentric sleeve, and supporting means for saidhead, including an upwardly concave spherical bearing element supportedby the frame, and a downwardly convex spherical bearing elementconforming thereto and associated with the head.

7. In a gyratory crusher, a crusher frame, an upstanding element on saidframe having a generally cylindrical exterior side bearing surface. aneccentrically apertured sleeve surrounding and conforming to saidexterior bearing surface, and means for rotating it, said sleeve havingexterior and interior generally cylindrical bearing surfaces, the axesof which are inclined to each other, the axis of the inner surface andthe exterior side bearing surface of the upstanding element beinggenerally vertical, and a head extending about an upper portion of saidupstanding element and having a bearing surface surrounding andconforming to the exterior bearing surface of the eccentric sleeve, andmeans for supporting said head, including an upwardly concave sphericalbearing surface associated with the head, and a downwardly convexspherical bearing surface supported by the frame and adapted to receivethe downwardly convex spherical bearing surface of the head.

8. In a gyratory crusher, a main frame, an upstanding element on saidmain frame having a generally cylindrical generally vertical exteriorside bearing surface, an eccentrically apertured sleeve surrounding andconforming to said exterior bearing surface, and means for rotating it,said sleeve having exterior and interior generally cylindrical bearingsurfaces, the axes of which are inclined to each other, and a headhaving a bearing surface surrounding and conforming to the exteriorbearing surface of the eccentric sleeve, said upstanding element havingan upwardly concave spherical bearing surface adapted to support saidhead, said crushing head having a downwardly convex spherical bearingsurface resting on and conforming thereto.

9. As a new article of manufacture, a crusher head having a generallyconic body portion having an outer crushing face and a generallycentrally located downwardly convex spherical bearing surface, and asleeve downwardly extending from the bottom of the head, said sleevehaving an internal generally cylindrical bearing surface of a length ofthe general order of the height of the crushing face of said bodyportion, and a generally conic eaves element extending downwardly andoutwardly from the outer face of said sleeve intermediate top and bottomthereof.

10. As a new article of manufacture, a crusher head having a generallyconic body portion having an outer crushing face and a generallycentrally located downwardly convex spherical bearing surface, and asleeve downwardly extending from the bottom of the head to a levelsubstan- 75. tially below the lower end of the crushing face,

said sleeve having an internal generally cylindrioutwardly from theouter face of said sleeve intermediate top and bottom thereof.

11. As a new article of manufacture, a crusher head having a generallyconic body portion having an outer crushing face and a generallycentrally located downwardly convex spherical bearing surface extendingcontinuously across the central portion of the head, and a bearingsleeve extending downwardly below said convex spherical bearing surface,said sleeve having an internal bearing surface;

12. As a new article of manufacture, a. crusher head having a generallyconic body portion having an outer crushing face and a generallycentrally located downwardly convex spherical hearing surface extendingcontinuously across the central portion of the head, and a bearingsleeve extending downwardly below said convex spherical bearing surface,said sleeve having an internal bearing surface, of a length ofthegeneral order of the height of the crushing face of said bodyportion.

13. As a new article of manufacture, a crusher head having a generallyconic body portion having an outer crushing face and a generallycentrally located downwardly convex spherical hearing surface extendingcontinuously across the central portion of the head, and a bearingsleeve extending downwardly below said convex spherical bearing surface,said sleeve having arrinternal bearing surface, said spherical bearingsurface being located adjacent the level of the upper end of the sleeve.

14. In a gyratory crusher, a crusher frame, an

upstanding element on said frame having a generally cylindrical exteriorside bearing surface, an eccentrically apertured sleeve surrounding andconforming to said exterior bearing surface, and means for rotating it,said sleeve having exterior and interior generally cylindrical bearingsurfaces, the axes of which are inclined to each other, the axis of theinner surface and the exterior side bearing surface of the upstandingelement being generally vertical, and a head extending about an upperportion of said upstanding element and having a bearing surfacesurrounding and conforming to the exterior hearing surface of theeccentric sleeve, and means for supporting said head, adapted to permitsaid head to gyrate about a center coincident with the intersection ofsaid axes, said center being located adjacent an upper part of the head.

15. In a gyratory crusher, a crusher frame, an upstanding element onsaid frame having a generally cylindrical exterior side bearing surface,

an eccentrically apertured sleeve-surrounding and conforming to saidexterior bearing surface, and means for rotating it, said sleeve havingexterior and interior generally cylindrical bearing surfaces, the axesof which are inclined to each other, the axis of the inner surface andthe exterior side bearing surface of the upstanding elementheinggenerally vertical, and a head extending about an upper portion of saidupstanding element and having a bearing surface. surrounding andconforming to the exterior bearing surface of the eccentric sleeve, andmeans for supporting said head, including a direct supporting connectionbetween a portion of the head and the upstanding element, adapted topermit said head to gyrate about a center coincident with theintersection of said axes, said center-being located adjacent an upperpart of thehead OSCAR c. GRUENDERI.

